no errors yet:

...
Iteration 2002 (after 5769.87s)
  53.581 nanosec per iteration: 2.3147 sec for 43200000 iterations
check
  (check took 0.334562s)
Iteration 2003 (after 5772.52s)
  51.384 nanosec per iteration: 2.2198 sec for 43200000 iterations
check
  (check took 0.334161s)
Iteration 2004 (after 5775.07s)
^C

